205510400

素因数分解:

$2^8\times 5^2\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:386

約数の個数: 108

約数和(自身を含む): 514388952

約数和(自身を除く): 308878552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 163, 197, 200, 256, 320, 326, 394, 400, 640, 652, 788, 800, 815, 985, 1280, 1304, 1576, 1600, 1630, 1970, 2608, 3152, 3200, 3260, 3940, 4075, 4925, 5216, 6304, 6400, 6520, 7880, 8150, 9850, 10432, 12608, 13040, 15760, 16300, 19700, 20864, 25216, 26080, 31520, 32111, 32600, 39400, 41728, 50432, 52160, 63040, 64222, 65200, 78800, 104320, 126080, 128444, 130400, 157600, 160555, 208640, 252160, 256888, 260800, 315200, 321110, 513776, 521600, 630400, 642220, 802775, 1027552, 1043200, 1260800, 1284440, 1605550, 2055104, 2568880, 3211100, 4110208, 5137760, 6422200, 8220416, 10275520, 12844400, 20551040, 25688800, 41102080, 51377600, 102755200, 205510400]

約数ペア:

[(1, 205510400), (2, 102755200), (4, 51377600), (5, 41102080), (8, 25688800), (10, 20551040), (16, 12844400), (20, 10275520), (25, 8220416), (32, 6422200), (40, 5137760), (50, 4110208), (64, 3211100), (80, 2568880), (100, 2055104), (128, 1605550), (160, 1284440), (163, 1260800), (197, 1043200), (200, 1027552), (256, 802775), (320, 642220), (326, 630400), (394, 521600), (400, 513776), (640, 321110), (652, 315200), (788, 260800), (800, 256888), (815, 252160), (985, 208640), (1280, 160555), (1304, 157600), (1576, 130400), (1600, 128444), (1630, 126080), (1970, 104320), (2608, 78800), (3152, 65200), (3200, 64222), (3260, 63040), (3940, 52160), (4075, 50432), (4925, 41728), (5216, 39400), (6304, 32600), (6400, 32111), (6520, 31520), (7880, 26080), (8150, 25216), (9850, 20864), (10432, 19700), (12608, 16300), (13040, 15760)]